API 510 QB A-F

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Professional Training and Consultation

SET - A

API-510 Preparatory Course

1. Following combination of Base metal and welding electrode was qualified by a certain PQR. Impact testing is not required.

Base Metal = SA 285 Grc Plates, 3/4" thk Welding electrode = AWS E 6015, 1/8" dia.

This PQR will qualify which of the following combinations of Base Metal – Welding electrodes.

a) 1" thk SA 515gr 60 plates, E 6013 electrodes, 5/32 " dia. b) 1 ¾ " thk SA 285 grc plates, E 6013 electrodes, 5/32" dia. c) 1 ¼ thk plates plates SA516gr70, E 7018 electrodes, 3/32

dia

d) None of above

2. A pressure vessel is to be constructed to with MDMT = + 200_{F ,}

M.O.C = SA 285 gr C .Required shell thickness = ¾ , Required dished head thickness = 1 1/8 " thk (torisph) Determine if this material is suitable for:

a) Both shell as well as Dished head b) Suitable for head but not for shell c) Suitable for shell only but not for head

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d) Not suitable for either

3. Name plate of a certain pressure vessel has name plate stamping as “ RT 3 “ for the radiography, All Welds are type 1 welds.

Vessel dia. = 72 inch I.D.

M.O. C = SA 515 gr 70 Design temp = 600_F

Allowable stress at design temp = 20,000 psi

If shell Thickness = 5/8" and C. A = 1/8" The MAWP for the vessel shell will be

a. 234 psi b. 168 psi c. 256 psi d. 286psi

4. Following two combinations of nozzle pipe dia and shell thickness are given of reinforcement. Case 1: vessel wall thk = ½ " and nozzle size NPS 3, Case 2 vessel wall thk = ¾ " Nozzle size NPS 2 . According to ASME Sec. VIII Div. 1, the reinforcement requirement for which of above nozzles by should be verified by calculations

a. For both cases b. For none

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d. Calculations required for 2 and not for 1

5. Which of the following changes on a pressure vessel could be termed as an alteration?

a. Addition of a reinforced nozzle of size equal to an existing nozzle

b. Addition of a nozzle not requiring reinforcement

c. Addition of a reinforced nozzle of size greater than an existing nozzle, where the thickness of reinforcement was found to be inadequate for the internal pressure

d. Only “b” and “c”

6. In liquid Penetrant Testing, a procedure is qualified to a temperature of 15 0_{C. pick up a correct statement.}

a. The same procedure is qualified to the temperature from 10 0_{C to 52}0_C

b. The same procedure is restricted to maximum of 15 0_C

only

c. The same procedure shall be applied to 5 0_{C to 10}0_C

d. The same procedure is qualified to the temperature from 0

0_{C to 5}0_C

7. In a magnetic particle testing, the operator reported a rounded indication with the following dimensions. Major dimension is 6.0

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mm and Minor dimension is 3.0 mm. But upon using a powerful magnifier, it was revealed that actual defect is only 4 x 1.5 mm. Based on Acceptance criteria of Asme Sec. VIII, Div 1, the indication shall be:

a. accepted, as the magnifier shows indication within acceptance standards

b. accepted, as it is not a major defect

c. rejected, as the visual inspection using magnifier shows critical indication

d. rejected, as the dimensions shown by the indication is above acceptance standards

8. A lead letter of B is used in radiography in order to know the scatter in well within the limits

a. By keeping the letter B on source side and image of B on film shall be lighter than the background

b. By keeping the letter B on source side and image of B on film shall be similar or darker than the background

c. By keeping the letter B on film side and image of B on film shall be similar or darker than the background d. By keeping the letter B on film side and image of B on

film shall be lighter than the background

9. For instrument calibration in Ultrasonic Testing, amplitude control linearity forms an important factor. The allowable tolerance for amplitude height linearity (of the nominal amplitude ratio) is:

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a. + 5 % b. + 10 % c. + 15 % d. + 20 %

10. Which of the following penetrant system is generally considered least sensitive?

a. Water-washable – visible dye. b. Solvent removable – visible dye. c. Water-washable – fluorescent dye. d. Post-emulsification – visible dye.

11. MPI can not be adopted for which of the following materials? a. Iron

b. Steel

c. Austenitic Stain less steels d. All of the above

12. Which of the following is an advantage of magnetic particle testing over penetrant testing?

a. It can detect surface discontinuities with foreign material imbedded in them.

b. It is faster on individual parts.

c. It can detect near-surface discontinuities. d. All of the above.

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13. Which of the following types of discontinuities is not normally detected by radiography?

a. Cracks

b. Incomplete penetration c. Laminations

d. Slag

14. Double wall Double image technique is used for the radiography of:

a. Plate welds

b. Tubular products with outer diameter up to 3.5 in c. Large pipes with outer diameter 200 mm and above d. Heavy castings

15. Visual check shall be carried out. a. Before welding

b. During welding c. After welding.

d. At all the above stages

16. Which of the following ASME Boiler and Pressure Vessel Code sections are referenced in API 510?

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b. ASME Section VIII Div 1 c. ASME Section IX

d. All of above

17. Corrosion and minimum thickness evaluation may be conducted by?

a. Use of a external micrometer b. Ultrasonic test

c. All of the above d. None of above

18. Which of the following are excluded from the scope of application of API 510?

a. Pressure vessels on movable structures covered by other jurisdictional regulations

b. All classes of containers listed for exemption from construction in ASME Section VIII Div. 1

c. Pressure vessels which do not exceed volume of the five cubic feet and pressure of 250 psi

d. All of the above

19. Widely scattered pits may be ignored as long as the following conditions are satisfied:

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a. No pit depth is greater than one half the vessel wall thickness exclusive of the corrosion allowance.

b. The total area of the pits does not exceed 7 square inches or 45 square cm within any 8 inch diameter circle

c. The sum of their dimensions along any straight line within a circle of diameter 8 inches does not exceed 2 inches ( 5 cm)

d. All of the above

20. Each vessel above ground shall be given a visual external inspection preferably while in operation at a frequency of: a. At least once in every 5 years

b. Same as that required for internal or on – stream inspection

c. The lesser of “a” or “b”

d. None of the above are applicable

21. An ellipsoidal head has an internal diameter of 76 inches and a depth of 21 inches (including a straight face of 2 inches). What should its spherical radius be for the crown portion? a. 76.0 inches

b. 38.0 inches c. 68.4 inches d. 60.8 inch

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SET - B

API-510 Preparatory Course

1. Re-rating may be done after which of the following requirements are met?

a. Calculations from either the manufacturer or an owner-use pressure vessel engineer experienced in pressure vessel design, fabrication or inspection shall justify the re-rating.

b. The re-rating is in accordance with the construction code to which the pressure vessel was originally built or by computations that are determined using the appropriate formulae in the latest edition of the ASME Code

c. Current inspection records verify that the pressure vessel is satisfactory for the proposed service conditions and that the corrosion allowance provided is adequate.

d. All of the above

2. Which of the following is / are to be undertaken in case the ownership and location of vessel are changed?

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a. The vessel shall be hydro tested only

b. The vessel shall be internally and externally inspected before it is re-used

c. The allowable conditions of service shall be established and the next period of inspection shall be established for the new service.

3. A new pressure vessel should be inspected to which of the following codes?

a. API 510

b. API 572

c. ASME Sec. VIII Div. 1 d. All of the above

4. For repairs as per API 510, the welders and welding procedures shall be qualified to the requirement of:

a. API 1104 code

b. ASME Section V c. ASME Section IX

d. AWS D 1.1

5. Calculate the remaining life of a vessel given the following data: Actual thickness = 0.955 inch. Minimum thickness

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required = 0.787 inch Thickness at pervious inspection 5 years prior to present inspection = 1.015 inch

a. 20 years

b. 14 years

c. 28 years

d. None of the above

6. The period between the two consecutive internal (or on-stream) inspections shall not exceed?

a. One half of the remaining life of the vessel (based on corrosion rate)

b. 10 years

c. cases where the safe working life is estimated to be less than 4 years the inspection interval may be the full remaining safe operating life up to a maximum of 2 years

d. The least of above

7. After completion or repairs, a pressure test a. Must always be conducted

b. Shall be applied if the authorized pressure vessel inspector believes that one is necessary

c. Must never be conducted

d. Shall be conducted only if repair is done on pressure parts.

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8. If probable corrosion rates can not be determined, on stream determinations shall be made after approximately

a. 10,000 hours of service b. 1000 hours of service c. 5000 hours of service

d. After 2,500 hours of service

9. Which of the following documents referenced in API 510 addresses recommended inspection practices for pressure vessels?

a. API 620

b. API 572

c. API Std 526

d. All of the above

10. After completion of alterations a pressure test a. Normally required

b. Subject to approval of the jurisdiction ( where applicable ) appropriate NDE shall be required where pressure test is not performed

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c. Substituting NDE procedure for a pressure test after an alteration ay be done only after consulting a pressure vessel engineer experienced in pressure vessel design and the authorized pressure vessel inspector have been consulted

d. All of above

11. Materials used for making repair by welding in carbon steel vessels shall have the following limitations?

a. They shall meet the requirements stipulated I NACE MR 0175

b. The carbon content shall not be over 0.35%

c. Welding repair shall be done by using only the GTAW process

d. All of the above

12. Corrosion under insulation (CUI) due to environmental factors like humidity, moisture, will be more pronounced at temperature

a. Below 250F

b. 250F to 2500F

c. More than 2500

d. Other factors being same corrosion in above temperature ranges will be same minimize.

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13. During Hydrostatic testing, risk of brittle fracture, which of the following action may be taken

a. Replace Hydro testing by pneumatic testing

b. Recalculate test pressure based on material stress at MDMT

c. Carry out test at temperature more 300_{F above MDMT}

14. Authorization for which of the following approval from pressure vessel engineer is not mandatory

a. Repairs for vessels that comply with sec VIII Div 1 b. Alterations for vessels that comply with sec VIII Div 1 c. Repairs for vessels that comply with sec VIII Div 2 d. Alternations for vessels that comply with sec VIII Div 2 15. In WPS PQR documentation, the essential, supplementary

essential and Non-essential variables (EV, SEV, NEV) shall be addressed in these documents. Which document shall address which of the variables.

a. All EVs , SEVs and NEV s shall be addressed in both WPS and PQR

b. Only EV s and SEVs shall be addressed in both PQR and WPS documents

c. PQR shall address all EVs and SEVs while WPS shall record all EV s , SEV s and NEVs

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d. WPS shall address EV s and SEVs while PQR must record all EVs , SEVs and NEVs

16. Corrosion and minimum thickness evaluation may be conducted by?

a.Use of Magnetic particle examination b.Ultrasonic testing

c. Profile radiography d.Only “b” and “c”

17. Which of the following is / are to be undertaken in case the ownership or location of vessel are changed

a. The vessel shall be internally inspected before it is re-used b. The vessel shall externally inspected before it is re-used. c. The allowable conditions of service shall be established and

the next period of inspection shall be established for the new service.

d. All of the above

18. Which of the following are essential elements of a Quality control system of a repair organization?

a. Statement of authority and responsibility b. Welding procedures

c. The relationship of the QC manager with the owner d. All of the above

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e. Only “a” and “b” above

19. Welders and welding procedures shall be qualified to the requirement of

a. ASME Section VIII Div. 1 b. ASME Section V

c. ASME Section IX d. None of the above

20. Calculate the remaining life of a vessel given the following data: Actual thickness = 0.955 inch Minimum thickness required = 0.755 inch Thickness at pervious inspection 5 years prior to present inspection = 1.025 inch

a. 20 years b. 14 years c. 28 years

d. Any of the above depending upon ambient conditions 21. The period between internal or on-stream inspections shall not

exceed?

b. 10 years

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d. In cases where the safe working life is estimated to be less than 4 years the inspection interval may be the full remaining safe operating life up to a maximum of 2 years

e. “c” and “d” above

22. After completion or repairs a pressure test a. Must always be conducted

b. Shall be applied if the authorized pressure vessel inspector believes that one is necessary

c. Must never be conducted d. Only “a’ and “b” above

23. Which of the following changes on a pressure vessel could be termed as an alteration?

a. Addition of a reinforced nozzle of size equal to an existing nozzle

b. Addition of a nozzle not requiring reinforcement c. Any change that effect the pressure containing

capacity of the vessel beyond the scope of items described in existing data reports

d. All of the above e. Only “b” and “c”

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24. If the bolt shank corrosion is anticipated for foundation bolts, what testing methods are recommended?

a. Tensile testing of equivalent sized rivets b. Hammer testing

c. RT at an angle to the shank axis d. All of the above

25. Which of the following documents referenced in API 510 addresses recommended inspection practices for pressure vessels?

a. API 620

b. API Recommended practice 572 c. API Std 526

d. All of the above

26. After completion of alterations a pressure test is: a. Normally required

b. Subject to approval of the jurisdiction (where

applicable ) appropriate NDE shall be required where pressure test is not performed

c. Substituting NDE procedure for a pressure test after an alteration ay be done only after consulting a

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pressure vessel engineer experienced in pressure vessel design and the authorized pressure vessel inspector have been consulted

d. All of the above

27. Which of the following are typical conditions found on the external surfaces of vessels?

a. Blistering

b. Caustic embrittlement c. CUI

d. Only “b” and “c” above

28. The external surfaces of vessels should be examined not only for corrosion but also for:

a. Leaks b. Cracks c. Buckles

d. All of the above

29. Erosion would normally be exhibited at: a. Wear plates on saddles

a. Baffle plates

b. Impingement plates

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30.How is hammer testing utilized?

a. As a supplement to visual inspection b. To be confirmed by subsequent NDT c. None of above

d. Only “b” and “a” above

31. Shells of vessels adjacent to inlet impingement plates are susceptible to

a. Stress-corrosion cracking b. Erosion

c. Hydrogen embrittlement

d. Any of the above depending upon ambient conditions 32. Which of the following are common reasons for in- service of

shutdown inspection:

a. To determine the physical condition of he equipment b. To determine the type, rate and causes of deterioration c. none of the above

d. “a” and “b” above

33.Which of the following may be classified as “internals” of vessels?

a. Catalyst bed supports b. Cyclone entry nozzles c. Demister pads

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d. “a” and “c”

34.If any setting is noticed on a vessel, which of the following should be done?

a. Conduct RT after 48 hours of observing the defective condition

b. Nozzles and adjacent shell areas should be inspected for distortion and cracking

c. Use acoustic emission monitoring d. All of the above

35.Which of the following are types of NDT methods? a. Ultrasonic testing

b. Radiographic testing c. Hammer testing d. Both “a” and “b”

36. Which of the following are common reasons for in- service of shutdown inspection?

a. To determine the physical condition of he equipment b. To determine the type, rate and causes of deterioration c. none of the above

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SET-C

API 510 Preparatory Course

1. Which of the following are excluded from the scope of application of API 510?

a. Pressure vessels on movable structures covered by other jurisdictional regulations

b. All classes of containers listed for exemption from construction in ASME Section VIII Div. 1

c. Pressure vessels which do not exceed volume of the five cubic feet and pressure of 250 psi

d. All of the above

2. During Hydrostatic testing, to avoid risk of brittle fracture, which of the following action may be taken?

a. Recalculate test pressure based on material stress at test temperature

e. Carry out test at temperature more 300_{F above MDMT}

f. The test area is cordoned off and out of bounds for non-essential personnel

g. None of the above

3. Which of the following are essential elements of a Quality control system of a repair organization?

a. Organisational authority and responsibility

b. Statements about Working (Inspection/repair)Procedures and their documentation

c. Statement of controls to ensure Quality conformance d. All of the above

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a. Jurisdiction organization

b. Inspection organisation of Insurance company which under writes insurance of pressure vessels

c. Inspection organization of owner-user d. Any of above

5. Repair Organization: According to API 510 is:

a. Holder of ASME certificate & appropriate code symbol stamp.

b. Owner-user

c. Contractor under contract with owner-user d. Any of above

6. For all repairs and alterations under API 510, the ultimate responsibility rests with:

a. Owner user b. API Committee c. API-510 Inspector d. Jurisdiction authority

7. Identify incorrect statement from following:

a. A welder performing procedure test is also qualified in that position.

b. Supplementary essential variables become essential variables when impact test is specified.

c. For procedure qualification, the test can be performed in any position as the position is not essential variable for procedure qualification.

d. None of above.

8. Following two combinations of nozzle pipe dia and shell thickness are given of reinforcement. Case 1: vessel wall thk = ½ " and nozzle size NPS 3, Case 2 vessel wall thk = ¾ " Nozzle size NPS 2 ½ According to ASME Sec. VIII reinforcement requirement for which of above nozzles by should be verified by calculations?

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a. For both cases b. For none

c. Calculations required for 1 but not for 2 d. Calculations required for 2 and not for 1

9. Normally, minimum thickness evaluation may be conducted by? a. Use of a external micrometer

b. Ultrasonic testing c. Vernier callipers d. None of above

10. Which of the following statements is true? a. All defects are not discontinuities b. All discontinuities are defects

c. Discontinuities are rejectable defects d. Defects are rejectable discontinuities

11. A Pressure Vessel is being designed for 0.85 joint efficiency with full penetration welds. RT requirement for such vessel is

a. Nil

b. Spot

c. 100 %

d. Joints radiography

12. Post weld heat treatment is carried out a. To increase hardness

b. To increase tensile strength

c. To release locked-up stresses in the weld d. None of above.

13. If all other conditions remain same the design thickness of which dished end (torispherical, hemispherical, ellipsoidal) will be maximum?

a. Torispherical b. Hemispherical c. Ellipsoidal

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14. In A 516 Gr 70 specification the letter A indicates: a. That material is ASME material. (A for ASME) b. That material is Ferrous material

c. That material is Non-Ferrous material d. None of the above

15. Any thickness-offset within the allowable tolerance shall be provided a taper transition of:

a. 3 to 1 min. b. 4 to 1 min. c. 3 to 2 min. d. All of the above

16. For calculating reinforcement pad requirements for given Design

Pressure, which of the following statement is applicable: a. Credit can be taken for extra metal in shell

b. Credit can be taken for extra metal in nozzle c. a and b above are true

d. None of above

17. Choose correct Pneumatic test pressure from given options for a vessel with following data:

Design Pr = 160 psi Design temp= 675º F

M.O.C = SA 537 Cl. 1

Allow stress (Ambient) = 20000 psi Allow stress (675ºF) = 19200 psi

a. 176.0 psig b. 215.6 psig c. 183.3 psig d. none of above

18. You are planning for the Hydro-test of a complete vessel with Hydro test pressure 40Kg/cm2_{g. The calibrated test gauges}

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available with you are 0-50 Kg/cm2_{g, 0-100 Kg/cm}2_{g, 1-150}

Kg/cm2_{g and 0-200 Kg/cm}2_{g. Which two gauges are acceptable for}

this test? a. 0-50 Kg/cm2_{g and 0-100 Kg/cm}2_g b. 0-100 Kg/cm2_{g and 0-200 Kg/cm}2_g c. 0-50 Kg/cm2_{g and 0-200 Kg/cm}2_g d. 0-100 Kg/cm2_{g and 0-150 Kg/cm}2_g

19. You are checking a plate received for the pressure vessel fabrication. What will be your action plan?

a. Correlate test certificate with applicable specification

b. Correlate heat marks and identification with the actual plate identification

c. Visual and dimensional inspection

d. All of the above are necessary action before accepting the plate.

20. Qualification of welding procedure as per Section IX is required: a. For manual welding process

b. For machine welding process

c. For semi automatic welding process d. For all of the above process

21. Erosion would normally be seen at: a. Drain nozzles

b. Saddle wear plates c. Impingement plates d. a. and c.

22. Temper embrittlement is:

a. Brittleness due to low temperature operation

b. Brittleness due to Hydrogen Sulphide attack at high temperatures ( exceeding 700 deg. F)

c. Loss of ductility due to incorrect PWHT and High temperature service

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d. None of above.

23. Part MAWP for lower dished head in Vertical vessel will generally be:

a. Lower than top head b. Lower than shell

c. Higher than both shell and top head d. Same as both top head and shell

24. Choose correct statement — Allowable External pressure for a vessel:

a. Will depend on weld joint efficiency (E) b. Depends on Vessel temperature

c. Depends on Internal Corrosion allowance d. Both b and c

25. PWHT is required for vessels containing products, classified as “lethal” or a thickness exceeding:

a. 1.0 inch b. 0 .5 inch c. 0.0 inch d. 1.5 inch

SET-D

API 510 Preparatory Course

1. For safe entry in pressure vessels which of the following document is adopted in the API-510 body of knowledge?

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a. API – 2015 b. API – 576 c. IRE – Chap II d. ASME – Sec. V

2. A piping & valve system is described as follows: “closure of a line, duct, or pipe by closing and locking two in-line valves and by opening and locking a drain or vent valve in the line between the closed valves” This is designated in API documents as:

a. Double valve single drain “arrangement b. “On-off” arrangement

c. “Double block and bleed” arrangement d. “Double in single out” arrangement

3. An individual stationed outside one or more permit spaces who monitors the authorized entrants and orders the authorized entrants to evacuate the permit space under unsafe conditions. This individual is referred as:

a. Supervisor

b. A qualified person c. An attendant d. None of above

4. HCl is more harmful in refining sour crudes because: a. In presence of H2S, corrosion of iron by HCl

becomes cyclic reaction regenerating HCl

b. HCL forms galvanic cell which causes corrosion cracking

c. HCl causes loss of ductility of steel. d. None of the above

5. “In austenitic stainless steels, in presence of chlorides spontaneous failure may occur under combined action of corrosion and tensile stress” What type of phenomenon is described by this statement:

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a. Sensitization of stainless steel b. Stress corrosion cracking

c. Intergranular corrosion of stainless steels d. Chromium-decay of stainless steels.

6. Sour crude is more corrosive than sweet crude because a. Sour crude is heavier than is sweet crude

b. Sweet crude has more waxing tendency (compared to sour crude) which forms protective layer on metallic surfaces hence sweet crudes are less corrosive.

c. Sour crude contains high content H2S and sulpher compared to sweet crude which lead to several types of corrosion

d. None of the above.

7. The nondestructive examination method to be used for a particular inspection should be determined by the:

a. Availability of certified NDE examiners b. Length of time since the last inspection c. Age of the component to be inspected

d. Type, location, and orientation of the expected flaws 8. In planning for an internal inspection of a vessel that has acidic

corrodents, what type of corrosion would you expect to find on the vessel shell from inside,

a. Hydrogen blistering in the vapor space b. Uniform corrosion of vessel wall

c. Erosion of vessel walls. d. None of above.

9. The principal reason for inspecting a pressure relief device is to determine:

a. Condition of pressure relief device and if it is functioning properly

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b. The remaining life of pressure relief device. c. The spring coil diameter.

d. The body thickness.

10. Where (typically) are balanced safety relief valves used in refineries?

a. For pressure control and bypass

b. On steam boiler drums and super heaters

c. When the discharge from the valves must be piped to remote points

d. All of the above

11. Which of the following are possible reasons for improper performance of valves?

a. Corrosion

b. Damaged seating surfaces c. Failed springs

d. All of the above

12. Which of the following tests must be conducted on a valve as soon as it has been removed out of a system:

a. Visual Inspection

b. Hydrotesting of valve body c. Radiographic testing

d. Check set-pressure and leak tightness

13. Which of the following best describes a safety relief valve?

a. A spring – loaded pressure relieving device that is popped open by enough static pressure in the huddling chamber and kinetic energy of the gas or vapour to overcome the spring force on the disc as it is lifted to provide full opening and allow minimal overpressure

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b. A spring – loaded pressure relieving valve that acts as a safety valve when used in gas or vapour service and as a relief valve when used in liquid service.

c. A spring – loaded pressure relieving device for liquid service that begins to open when the inlet pressure reaches set pressure. Overcomes the spring force and begins to lift the disc off the seat and that continues to open as inlet pressure and the lift of the disc increase allowing the flow

of the liquid to increase d. All of the above

14. Which of the following are reasons for inspection of pressure relieving devices:

a. To protect personnel and equipment b. To determine the condition of a device c. To evaluate inspection frequency

d. All of the above

15. Which of the following could cause flutter/chatter in valves? a. Improper material of construction

b. Overpressure c. Erosion

d. Large length piping to the valve inlet from the vessel 16. API 576 does not address:

a. Valve testing on test benches in shop b. Application of rupture discs

c. Training requirements for mechanics involved in inspection and repair of pressure relieving devices d. All of the above

17. If any settling is noticed on a vessel, which of the following should be done:

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18. Recommended resistance of electrical grounding connections is: a. 5 ohms

b. 50 ohms c. 100 ohms

d. none of the above

19. For vessels which are supported on concrete saddles and working in an area where the humidity is high which areas on them are typically susceptible to external corrosion?

a. At the anchor bolts in the foundation

b. At the Points of contact of the metal surface with the concrete

c. All of the above d. None of the above

20. H2S is in sour crude is more harmful in presence of:

a. Oxygen

b. Water (i.e. Wet H2S)

c. Sulphur

d. ‘a’ and ‘c’ above

21. The leak tightness of the relief valves is tested on the test block at a pressure equal to:

a. Same as set pressure b. 90% of the set pressure c. Same as reseat pressure d. None of the above

22. During Hydrostatic testing, risk of brittle fracture, which of the following action may be taken

a. Replace Hydro testing by pneumatic testing

b. Recalculate test pressure based on material stress at MDMT

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c. Carry out test at temperature more 300_{F above}

MDMT

23. Which of the following classifications of heat exchangers would have U-tubes incorporated into it?

a. AES type b. BEM type c. AEP type d. CFU type

24. If any setting is noticed on a vessel, which of the following should be done:

25. Which of the following are typical deterioration that can take place on the external surfaces of vessels?

a. CUI

b. Caustic embrittlement c. Erosion

d. All of the above

26. The external surfaces of vessels should be examined not only for corrosion but also for:

a. Leaks b. Cracks c. Buckles

d. All of the above

27. Which of the following are commonly used techniques of surface preparation for inspection:

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a. Wire brushing b. Sand – blasting

c. High pressure water blasting d. All of the above

28. According to API 510, authorized inspection agency is: a. Jurisdiction organization

b. Insurance company which under writes insurance of pressure vessels

c. Inspection organization of owner-user d. Any of above

29. Repair Organization: According to API 510 is

a. Holder of ASME certificate & appropriate code symbol stamp

b. Owner-user

c. Contractor under contract with owner-user d. Any of above

30. For corrosion area of considerable size; thickness averaging along most critical element shall not exceed following length for 72” ID vessel.

a. 20 inches b. 40 inches c. 30 inches d. None of above

31. According to API 510 for ellipsoidal head, crown portion thickness recalculation:

a. Crown can be taken as spherical portion of radius K1 x D

b. K1 depends on D/2h ratio

c. Crown lies within concentric circle of 80% shell diameter d. All of above

32. For non-continuous corrosive service with remaining life 25 years, external inspection shall be performed after:

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b. 12.5 years c. 5 years

d. None of above

33. Inspection records shall have following information a. Design & Construction records (permanent) b. Running inspection records

c. Repair and alteration records d. All of above

34. According to API-510, restoration by welding of parent metal loss may be made by using by electrodes having tensiles strength:

a. Same as parent material b. Higher than parent material c. Lower than parent material d. All of the above

35. For all repairs and alterations under API 510, the ultimate responsibility rests with

a. Owner user b. API Committee c. API-510 Inspector d. Jurisdiction authority 36. “Hot tapping” means

a. Light tapping of vessel by ball point hammer to find leakages when the vessel is operating at working temperature.

b. Cutting the threads in the help of tap and die when material hot so as to make the cutting of threads easier

c. Act of providing new tapping connection while the vessel is in operation

d. Tapping hot water samples from process plants for analysis purpose

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a. can detect surface discontinuities with foreign material imbedded in them

b. It is faster on individual parts

c. It can detect near-surface discontinuities d. All of the above

38. In an A-scan presentation, the amplitude of vertical indications on the screen represents the

a. Amount of ultrasonic sound energy returning to the search unit

b. Distance traveled by the search unit c. Thickness of material being tested

d. Elapsed time since the ultrasonic pulse was generated 39. The nondestructive examination method to be used for a

particular inspection should be determined by the: a. availability of certified NDE examiners.

b. length of time since the last inspection. c. age of the component to be inspected.

d. type, location, and orientation of the expected flaws. 40. Which of the following statements is true?

a. All defects are not discontinuities. b. All discontinuities are defects.

c. Discontinuities are rejectable defects. d. Defects are rejectable discontinuities.

41. Which of the following search unit would contain the thinnest quartz crystal?

a. A 1 megahertz search unit b. A 5 megahertz search unit c. A 15 megahertz search unit d. A 25 megahertz search unit

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42. Which of the following can be magnetized? a. Iron

b. Nickel c. Cobalt

d. All of the above

43. Why are magnetic particles available in different colors? a. For color contrast with the part surface.

b. To enhance the detection of indications. c. Both a and b.

d. Different colors are used with different magnetic flux values.

44. Visual testing is a

a. Nondestructive testing techniques applicable for surface and internal discontinuities

b. Nondestructive testing techniques applicable for surface discontinuities only.

c. Destructive testing techniques applicable for surface and internal discontinuities.

d. Destructive testing techniques applicable for internal discontinuities only.

45. Incase of horizontal insulated vessel most likely location of CUI will be:

a. Under belly areas

b. At the top in lengthwise area

c. In 3 O’clock and 9 o’clock position d. Uniformly all over

46. The rate of erosion varies as: a. Square of fluid velocity b. Linearly with velocity c. Varies as cube of velocity

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47. For testing relief valves for set pressure: a. Only air shall be used

b. Only water shall be used c. The combination may be used

d. Only nitrogen shall be used irrespective of service condition 48. Cracks and laminations look similar from surface however,

generally:

a. Cracks run normal to vessels surfaces b. Lamination runs slant or parallel to surface c. a and b above

d. None of above

49. Visual Testing can detect the following weld discontinuities. a. Undercut

b. Crater crack

c. Excessive reinforcement d. Allof the above

50. What probe would be chosen to detect the smallest defect if steel specimen with a velocity 6 x 106_{mm/sec is to be}

inspected? a. 2 MHz b. 10 MHz c. 5 MHz d. 6 MHz

51. Austenitic S.S. is considered as good Cryogenic material because: a. Because of its good corrosion resistance

b. Because of its good tensile Strength c. Because of its good yield Strength d. Because of its good impact Strength

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SET-E

API 510 Preparatory Course

1. For repairs on vessel walls, which have been subjected to PWHT as a code requirement and made of P1 or P3 Steels, (for which exemptions exist in ASME Sec. VIII Div 1 code,) which of the following options may be adopted?

a. Conduct RT after 48 hours of completion of all hot work b. Pre- heat to al least 3000_{F as an alternative to PWHT}

after repair

c. Use acoustic emission monitoring d. Ultrasonic testing

2. HCl is more corrosive in refining sour crudes because: a. In presence of H2S, corrosion of iron by Hcl becomes

cyclic reaction regenerating Hcl.

b. Hcl liberates chlorine in presence of sulphur which causes stress corrosion cracking

c. Hcl liberates Hydrogen in presence of sulphur causing Hydrogen embrittlement.

2. “In austenitic stainless steels, in presence of chlorides spontaneous failure may occur under combined action of corrosion and tensile stress” What type of phenomenon is described by this statement?

a. Sensitization of stainless steel? b. Stress corrosion cracking

c. Intergranular corrosion of stainless steels d. Chromium-decay of stainless steels

4. Sour crude is more corrosive than sweet crude because a. Sour crude is heavier than sweet crude

b. Sweet crude has more waxing tendency (compared to sour crude) which forms protective layer on

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metallic surfaces hence sweet crudes are less corrosive.

c. Sour crude contains high content H2S and sulpher compared to sweet crude which lead to several types of corrosion

5. In planning for an internal inspection of a vessel that has acidic corrodents, what type and location of corrosion would you expect to find on the vessel shell, away from the welds?

a. Hydrogen induced cracking in the vapor space b. Hydrogen embrittlement in the vapor space c. Hydrogen blistering near the liquid level

d. Hydrogen embrittlement below the liquid level

6. What can be done to extend the life of a vessel with a corroded area in the shell plate 12 inches from the weld, a joint efficiency of less than 1, and a corrosion thickness currently near the minimum required thickness?

a. Recalculate t minimum for current operating conditions

using E < 1.

b. Recalculate t minimum for current operating conditions

using E = 1.

c. Recalculate t minimum for design conditions using E = 1.

d. Recalculate t minimum for design conditions using E < 1.

7. A pressure vessel constructed according to ASME Sec VIII Div 1 with shell thickness 7/8’’ (Material of Construction is classified as P no 4 Gr. 1), repaired by using insert plates. The requirement of radiography to be incorporated in repair procedure shall be:

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a. Full radiography b. Spot radiography

c. May be a, or b depending on joint efficiency d. Data is not adequate

8. SA 516 Gr 70 specification the number 70 indicates: a. Minimum yield strength

b. Minimum ultimate tensile strength c. Minimum % elongation

9. Which of the following are reasons for inspection of pressure - relieving devices:

a. To protect personnel and equipment b. To determine the condition of a device c. To evaluate inspection frequency

d. All of the above

10. Shells of vessels adjacent to inlet impingement plates are susceptible to:

a. Stress-corrosion cracking b. Erosion

c. Hydrogen embrittlement

d. Any of the above depending upon ambient conditions 11. H2S is in sour crude is more harmful in presence of:

a. Oxygen

b. Water (i.e. Wet H2S)

c. Sulphur

d. ‘a’ and ‘c’ above

12. The leak tightness of the relief valves is tested on the test block at a pressure equal to:

a. Same as set pressure b. 90% of the set pressure c. Same as reseat pressure d. None of the above

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13. Which statement is correct?

a. ASME Section II B deals with consumables for welding b. ASME Section V gives acceptance standards for NDT

examinations

c. PWHT can be carried out after Hydro test as a good engineering practice

d. Lower the Carbon content, better the weldability

14. The symbol which indicates ASME code stamping for vessels manufactured to ASME Section VIII Div. 1 is:

a. U1 b. U2 c. U3 d. U

15. Which of the following is essential variable for procedure qualification?

a. Welder used for welding b. Weld edge preparation c. Welding process

d. All of the above

16. Presence of hydrogen can cause which of the following defects at welds?

a. Slag

b. Under-bead Cracking c. Lamination

d. All of the above

17. Which of the following method is most suitable for detecting lamination in 25mm thick C.S. plate? a. RT

b. UT c. MT d. PT

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18. A stainless steel weld has a crack open to the surface. Which NDT method will reveal it effectively ?

a. Liquid Penetrant. b. Magnetic particle. c. Radiography. d. All of above.

19. Procedure Qualification Record is a document which can be revised time to time?

a. True b. False

c. Depends on company policy

d. Depends on client of the company

20. Which of the following are areas on pressure vessel which are susceptible to CUI?

a. All the area which is below insulation b. Insulated areas below steam vents

c. Insulated piping exposed to cooling tower mist d. “b” and “c” above

21. Calculate the remaining life of a vessel subjected to unoform rate of corrosion given the following data: Actual thickness = 0.955 inch, Minimum thickness required = 0.755 inch Thickness at pervious inspection 5 years prior to present inspection = 1.025 inch

a. 20 years b. 14 years c. 28 years

22. Corrosion under insulation (CUI) due to environmental factors like humidity, moisture, will be more pronounced at temperature:

a. 250_{F to 250}0_F

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c. Other factors being same corrosion in above temperature ranges will be same

d. None of above

23. Vessel MAWP for vertical vessel is measured at: a. Top most point of vessel

b. Bottom most point of vessel

c. At the mid point between top & bottom d. None of above

24. Hot tapping is best described by statement:

a. It is technique of preheating the part of vessel to specified temperature and tapping with 1lb. rainded hammer to detect wall thinning

b. It is technique of providing a tapping connection while pipe system is in operation

c. It is technique of fixing a water tap on hot water lines for use during winter

d. It is act of using the tap and die for threading when the part is hot

25. “CUI” is API 510 means: a. Corrosion under inspection b. Components under inspection c. Corrosion under investigation d. Corrosion under insulation

26.Inspection records contain the following information for a particular thickness measurement location (TML) on a dished head.(Thickness in inches)

Thicknes

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0.500 0

0.425 5

0.400 10

On the basis of the information above, the long-term corrosion rate for the location is:

a. 1 ½ mils per year b. 5 mils per year c. 10 mils per year d. 100 mils per year

27. A certain Weld in vessel (P1 material with exemptions in ASME –VIII-Div. 1) was required to have PWHT initially according to code requirement. After 10 years when repaired by welding is to be carried out. Performing PWHT is found to be impracticable. What solution (according to API-510) would you offer?

a. PWHT may be exempted, if proper NDE is carried out b. Carry out Temper-bead welding as on alternative PWHT. c. Carry out both Hydro-testing and Pneumatic Testing in

lieu of the PWHT

d. None of above would be acceptable solution 28. Double wall Single image technique is used for the

radiography of: a. Plate welds

b. Tubular products with outer diameter more than 3.5 inch.

c. Heavy castings d. None of above

29. Which of the following is a description of an “indication”? a. A response or evidence resulting from the application of a

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b. A defect if it is of size greater than 3 mm c. The light which is emitted from a signal d. All of the above

30. Welders carrying out repair/alteration according to API 510 shall be qualified according to:

a. API 1104 welding qualification code b. ASME Sec. IX code

c. Any one of a or b above d. None of a or b above

31. Which of the following represent grouping of weld-metals in ASME IX?

a. P – Nos b. F – Nos c. S – Nos d. A - Nos

32. A PQR was qualified in 5G position using a new welder. But production welding is to be done in 2G position. Which of the following are applicable as a minimum?

a. Both procedure and welder shall be re-qualified in 2G position.

b. The qualified procedure can be used ,only welder needs to be re-qualified

c. The welder is qualified, but the procedure needs re-qualification

d. Both procedure and welder need not be re-qualified.

33. For a vessel, estimated remaining life is estimated as 7 years from now, next planned inspection shall not be later than:

a. 7 Years b. 3.5 Years

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c. 5 Years d. 6 Years

34. Calculate the remaining life and external insp. interval of a vessel given the following data:

Actual thickness = 0.955 inch

Minimum thickness required = 0.755 inch

Thickness at previous inspection 5 years prior to present inspection = 1.025 inch

a. 20 years, 10 years b. 14 years,5years c. 28 years, 10 years d. None of the above

35. ASME Sec VIII Div. 1 specifies different acceptance level for weld reinforcement, which of the following statements are true in your opinion:

a. Permitted reinforcement for long. seems is higher than circ. seems

b. Permitted reinforcement for long. seems is lower than circ. seems

c. Permitted reinforcement for long. seems is same as circ. seems

d. Permitted reinforcement does not depend on location of seems.

36. While deciding the governing thickness for crown portion for corroded 2:1 ellipsoidal head, API 510 stipulates that & crown thickness shall be calculated:

a. According to relevant ellipsoidal dished head formula b. According to code formula for spherical heads with head

radius equal to 0.9 D, where D is shell dia meter.

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37. For instrument calibration ( check Instrument response to energy input in dB) in Ultrasonic Testing dB , amplitude control linearity forms an important factor. The allowable tolerance for amplitude height linearity (of the nominal amplitude ratio) is:

a. + 5 % b. + 10 % c. + 15 % d. + 20 %

38. Which of the following ASME Boiler and Pressure Vessel Code sections are referenced in API 510?

a. ASME Section V b. ASME Section VIII c. ASME Section IX d. All of above

39. Which of the following is / are to be undertaken in case the Service conditions of vessel are changed?

a. The vessel shall be hydro tested only.

b. The vessel shall be internally and externally inspected before it is re-used.

c. The allowable conditions (MAWP, Temp. rating) for new service shall be established and the next period of inspection shall be established for the new service.

d. None of above

40. The period between External inspections for vessels (remaining life > 4 years) shall not exceed which of following:

a. Smaller of: One half of the remaining life of the vessel and 10 years

b. 5 years

c. The lesser of “a” and “b” d. The higher of a. and b.

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41. Materials used for making repair by welding in carbon steel vessels shall have the following limitations?

a. They shall meet the requirements stipulated in NACE MR 0175

b. The carbon content shall not be over 0.35% c. The Carbon Equivalent shall not be over 0.35% d. All of the above

42. For carrying out temper – bead welding technique in lieu of PWHT, which of the following is applicable?

a. The weld shall be deposited by GTAW process, with Argon gas shielding

b. Weld metal shall be deposited by SMAW process using low-Hydrogen electrodes

c. After depositing each layers of the weld, The weld shall be DP checked

43. The period between internal or on-stream inspections shall not exceed?

b. 10 years

c. In cases where the safe working life is estimated to be less than 4 years the inspection interval may be the full remaining safe operating life up to a maximum of 2 years

d. Least of all above

44. If rivet shank corrosion is anticipated for riveted vessels what testing methods are recommended?

a. Tensile testing of equivalent sized revets b. Hammer testing

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45. Which of the following classifications of heat exchangers would have U-tubes incorporated into it?

a. AES type b. BEM type c. AEP type d. CFU type

46. Which of the following are typical conditions found on the external surfaces of vessels?

a. Hydrogen Blistering b. Hydrogen embrittlement c. CUI

d. All of the above

47. The external surfaces of vessels should be examined for: a. CUI

b. settlement c. distortions d. All of the above

48. Which of the following are types of NDT methods? a. Ultrasonic testing

b. Radiographic testing c. Hammer testing d. All of the above

49. How many tube sheets would a heat exchanger have which incorporates U-tubes in it?

a. One b. Two c. Three

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50. Scheduling of refinery shutdowns for maintenance or inspection is usually arranged through the collaboration of: a. Process group

b. Maintenance group c. Inspection group d. All of the above

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SET-F

API 510 Preparatory Course

1. An ellipsoidal head has an internal diameter of 76 inches and depth of 21 inches (including a straight face dimension of 2 inches). What should its spherical (crown) radius be?

a. 76.9 inches b. 15.6 inches c. 68.4 inches d. all of the above

2. A lead letter of B is kept between cassette and film in order to know:

a. The scatter in well within the limits- When B is darker b. The scatter isn well within the limits- When B is lighter c. For the purpose of measuring the intensification factor d. As standard marking on radiographs.

3. Which of the following penetrant system is generally considered least sensitive?

a. Water-washable b. Solvent removable c. All equally sensitive d. Post-emulsification

a. It can detect surface discontinuities with foreign material. b. Imbedded in them

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c. It is faster on individual parts.

d. It can detect near-surface discontinuities. e. All of the above.

5. Which of the following types of discontinuities is not normally detected by radiography?

a. Cracks

b. Incomplete penetration c. Laminations

d. Slag

6. Double wall Double image technique is used for the radiography of:

a. Plate welds

b. Tubular products with outer diameter less than 87.5 mm c. Large pipes with outer diameter 200 mm and above d. Heavy castings

7. The temperature measured at a weld layer is around 130 0_C

during multipass welding. It is decided to carryout a surface NDT method. Choose a best combination.

a. Penetrant testing with dry developer b. Penetrant testing with fluorent penetrant c. Magnetic particle testing with wet particles d. Magnetic particle testing with dry particles

8. In a magnetic particle testing, an operator reported a surface indication with the following dimensions. Major dimension is 6.0 mm and Minor dimension is 2.0 mm. But upon using a powerful magnifier, later it was revealed that it is only 4 x 1.5 mm. The indication shall be:

a. accepted, as the magnifier shows indication within acceptance standards

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c. rejected, as the visual inspection using magnifier shows critical indication

d. rejected, as the dimensions shown by the indication is above acceptance standards

9. In ultrasonic testing, during scanning, each pass of the search unit shall overlap a minimum of:

a. 10 % of the transducer dimension parallel to the direction of the scan

b. 10 % of the transducer dimension perpendicular to the direction of the scan

c. 100 % of the transducer dimension parallel to the direction of the scan

d. 100 % of the transducer dimension perpendicular to the direction of the scan

10. In the radiography, penetrameter is put on the job to: a. Evaluate the image quality of the radiograph.

b. Measure the strength of the penetrating radiation. c. Check the density of the radiograph.